If all toenails have transverse lines, it may be due to malnutrition, as nails require nutrients such as vitamins and trace elements for growth. It is recommended to eat more foods rich in nutrients in daily diet. Ingrown toenail can also cause transverse lines on nails by affecting the blood circulation around the nails, hindering nutrient supply, and leading to the appearance of transverse lines.
1. Transverse lines on toenails may also be due to abnormal development or nail changes caused by certain skin diseases.
2. Changes in toenails accompanied by skin diseases such as eczema, dermatitis, pityriasis rubra pilaris, roseola, and striate lichen on the feet are more commonly seen in the big toenail.
3. White transverse lines on nails are also seen in chronic arsenic poisoning, heart and kidney diseases, Hodgkin's disease, or characteristic manifestations of decreased albumin.
4. If the transverse lines on nails are deep, forming transverse grooves on the nail plate, they are caused by temporary dysfunction of the nail matrix. This can occur after diseases such as scarlet fever, pneumonia, measles, drug reactions, or due to local trauma or inflammation. Local eczema or psoriasis can also trigger this.
5. It is also necessary to consider whether it is a fungal infection that causes onychomycosis. Additionally, this manifestation may be caused by the compression due to wearing inappropriate shoes.
6. Horizontal indentations are the result of nail damage or suspension of growth due to various reasons, which may be related to high fever, trauma, chemotherapy, malnutrition, drug allergies, etc.
